WordPress plugin and theme conflicts occur when a plugin or theme behaves unexpectedly or causes errors due to incompatibilities with other plugins, themes or the WordPress core itself.
You can use a free WordPress plugin to detect for plugin and theme conflicts.
1. Log in to your WordPress dashboard
2. Click on Plugins
3. Go to Add New Plugin
4. Search for the Health Check & Troubleshooting plugin
5. Click the Install button
6. Once installed, click on the Activate button
7. From your WordPress dashboard, click on Tools
8. From the dropdown, click on Site Health
9. Click on the Troubleshooting tab
10. Click on the Enable Troubleshooting Mode button
11. Once activated, you will see the Troubleshooting Mode – enabled screen. On this screen, troubleshooting is enabled only for you and your website visitors are not affected
12. To start troubleshooting the potential plugin and theme conflicts on your website, expand the Available plugins and Available themes sections by clicking the downward arrows on both V
13. You may want to consider switching your website to a default WordPress theme such as the Twenty-Two theme to rule out any conflicts specific to your theme
14. As you continue enabling your installed plugins one by one, you can see which one is causing the problem on your website or incompatibility with other plugins and/or themes.